What is the height and kinetic energy lost in a projectile-block collision?

[Ying99]

Homework Statement

A projectile traveling vertically strikes a block and stays in it. The mass of the projectile is 0.20kg and its speed is 3.0m/s at the instant of impact. The mass of the block is 1.3kg. Air resistance may be neglected.

(a) How high does the block rise?
(b) How much kinetic energy is lost in the collision?[/B]

 

[NFuller]

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